I'm having issues trying to get spamassassin to add emails to the blacklist. I've added a file in /root/.spamassassin/user_prefs and I've placed "blacklist_from email@domain.com" in the first line. I reloaded SA and it doesn't trash emails from that user.

I've also tried adding the file to the vmail directory and even under the vmail/user directory, and also in the local.cf file.

Where do I place black lists for spamassassin using this configuration?